Associated HI absorption in thez = 3.4 radio galaxy B2 0902 + 343 observed with the GMRT |
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| Authors: | Poonam Chandra Govind Swarup Vasant K Kulkarni Nimisha G Kantharia |
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| Institution: | (1) Tata Institute of Fundamental Research, 400 005 Mumbai, India;(2) Joint Astronomy Programme, IISc, 560 012 Bangalore, India;(3) National Centre for Radio Astrophysics, TIFR, 411 007 Pune, India |
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| Abstract: | We have made observations of the as sociated HI absorption of a high redshift radio galaxy 0902+34 atz = 3.395 with the Giant Meterwave Radio Telescope in the 323 ± 1 MHz band. We find a narrow absorption line with a flux density
of 11.5 mJy at a redshift of 3.397 consistent with that observed by Usonet al. (1991), Briggset al. (1993) and de Bruyn (1996). A weak broad absorption feature reported by de Bruyn (1996) has not been detected in our observations.
We also place an upper limit of 4mJy(2σ) on emission line strength at the position where Usonet al. (1991) claimed to have found a narrow emission line. |
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| Keywords: | Galaxies: active absorption lines-radio lines galaxies-radio galaxies individual (0902 + 343) |
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